You could do worse than to confuse the meanings of "code" and "cipher"—even cryptographers sometime use the terms as though they had the same meaning. There is, however, a definite distinction between ...

For 51 years, one of the Zodiac Killer’s puzzling codes he sent in letters to newspapers in the late 1960s and early 1970s has confounded the cryptography community, law enforcement and curious ...

The story of Kryptos and the cryptanalyst who spent decades trying to solve the CIA sculpture greatest mystery.

A coded message sent by the Zodiac Killer to the San Francisco Chronicle in 1969 has finally been cracked, the newspaper reported Friday. A team of code breakers solved the vexing cryptogram after 51 ...

The Voynich manuscript has long been shorthand for the unsolved and the unknowable, a late medieval codex filled with looping ...

SAN FRANCISCO -- Experts have solved the code in the "340 Cipher" sent to the San Francisco Chronicle in 1969 by the Zodiac Killer, the elusive figure who terrorized California's Bay Area decades ago ...

SAN FRANCISCO — A piece to the puzzle in one of America’s most talked-about unsolved mysteries apparently fell into place as news surfaced Friday that a code in the Zodiac Killer case had been solved ...

Sam Blake, an Australian mathematician, first learned of the Zodiac Killer’s unsolved ciphers — a series of encrypted messages — from a documentary in the 1990s. His interest marginally increased in ...